Answer:
Internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur. External regulators speed up or slow down the cell cycle.
Explanation:
I hope this helps :)
The answer is blood plasma. Blood
plasma is ultrafiltrated
by the choroidal capillaries to become cerebral spinal fluid, about
50%. The rest is secreted by the cells of
the choroid plexus and ventricular ependyma. They contain the same elements in the blood plasma necessary for the nourishment an proper functioning of cells
consume what and you put
out your question in the wrong learning section
Substitution I believe is the right answer but I never learned identity property
